39161903 has 4 divisors (see below), whose sum is σ = 42722088. Its totient is φ = 35601720.

The previous prime is 39161887. The next prime is 39161909. The reversal of 39161903 is 30916193.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 39161903 - 2⁴ = 39161887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39161903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39161909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780076 + ... + 1780097.

It is an arithmetic number, because the mean of its divisors is an integer number (10680522).

Almost surely, 2^39161903 is an apocalyptic number.

39161903 is a deficient number, since it is larger than the sum of its proper divisors (3560185).

39161903 is a wasteful number, since it uses less digits than its factorization.

39161903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560184.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 39161903 is about 6257.9471873770. The cubic root of 39161903 is about 339.5897676258.

It can be divided in two parts, 3916190 and 3, that added together give a palindrome (3916193).

The spelling of 39161903 in words is "thirty-nine million, one hundred sixty-one thousand, nine hundred three".